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How to register IP Phone to UC520 over Internet

Is there a way to register Cisco IP Phones to UC520 over Internet without VPN?

We have the following:

Cisco UC520

Cisco 7940 IP Phones

Software Version: 15.1(2)T4

Device Type: UC520-8U-4FXO-K9

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3 REPLIES
Hall of Fame Super Gold

Re: How to register IP Phone to UC520 over Internet

It is really, really recommended to not do that.

However if you want, configure the public ip as ip source under ip telephony, on the phone configure an alternate TFTP address with CME address.

New Member

Re: How to register IP Phone to UC520 over Internet

what is the recommendation?

Hall of Fame Super Gold

How to register IP Phone to UC520 over Internet

To use VPN.

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